Wrench.



J. P. ANDERSON.

WRENCH. APPLICATION FILED AUG. 81, 1909. RENEWED MAR. 10, 1913.

1,06 3,3 14.. a ented June 3, 1913.

WITNESSES: INVENTOR v7 M 02m, NW7

ATTORNEY COLUMBIA PLANOGRAPH CO-IWASHINGTON. D c.

tinirnn srarns Parana ornion JOHN F. ANDERSON, OF SAN FRANCISCO,CALIFORNIA.

WRENCH.

Application filed. August 31, 1909, Serial No. 515,508.

To all whom it may concern:

Be it known thatI, JOHN F. ANDERSON, a citizen of Sweden, residing atSan Francisco, in the county of San Francisco and State of California,have invented new and useful Improvements in W'renches, of which thefollowing is a specification.

The present invention relates to improvements in wrenches, the object ofthe inven tion being to provide a wrench in which the faces of thegripping jaws shall be set obliquely to the handle, thereby facilitatingin many cases the operation of turning a nut by means of said wrench.

With the common form of wrench in which the faces of the gripping jawsare at right angles to the handle, it is necessary that said jaws shouldproject a considerable distance from said handle, which renders it ofteninconvenient to turn the wrench on account of the lack of space in whichthis has to be done. In my improved wrench the faces of the gripping awsare set obliquely, so that said jaws do not project to so great anextent as heretofore from the line of the general direction of thewrench.

A further object of the invention is to provide means for accomplishingthis object which will be strong and durable and will not easily get outof order.

A further advantage of the invention is the convenience of adjustment,the adjusting means being in the line of the general direction of thewrench, instead of being offset to one side as has heretofore generallybeen the practice.

In the accompanying drawing, Figure 1 is a side view of the wrench; Fig.2 is a longitudinal section thereof, part of the handle being shown inside elevation; Fig. 3 is a longitudinal section at right angles to thatof Fig. 2, the nut being shown in side view; Fig. 4 is a side view ofthe movable jaw detached; Fig. 5 is an end view of the movable jawdetached; Fig. 6 is a cross section on the line 6-6 of Fig. 2.

Referring to the drawing, 1 indicates the stem or handle of a wrench,having formed integral therewith a fixed jaw 2. The gripping face 3 ofthe fixed jaw, instead of extending at right angles to the generaldirection of the wrench, as is usual, extends at an angle of 45 degreestherewith.

Extending through the head of the wrench at right angles to saidgripping face of the fixed jaw is a slideway 4, in the inner sur-Specification of Letters Patent.

PatentedJune 3, 1913. Renewed March 10, 1913. Serial No. 753,424.

face of the opposite walls 5 of which are formed parallel ribs 6, andsliding in said slideway is the shank 7 of the movable jaw 8, said shankbeing formed on opposite sides with grooves 9 which respectively engagethe ribs 6. The gripping face 10 of the movable jaw 8 extends at rightangles to said shank, and therefore, when the parts are in position,parallel to the gripping face of the stationary jaw. As the shank movesin the slideway the movable jaw moves to or from the stationary jaw. Inorder to so move said shank, there is provided a screw 11, which travelsin a guideway 12 formed in the body of the wrench, and is moved in saidguideway by means of a nut 13 screwed on said shank and working within ahole 14: formed through said handle or body. The Working end of saidscrew is formed with a transverse groove 15 and a lip 16, which areadapted to engage respectively a rib 17, and a groove 18, formed in theshank of the movable jaw, extending at an angle of 45 degrees with thegrooves 9 in said movable jaw, and, therefore, when the parts are inposition, extending at right angles to the stem of the wrench. Byturning the nut 13 the screw 11 is moved to and from said stationaryjaw, and the shank of the movable jaw likewise moves to and from saidstationary jaw, but, because the shank of the movable jaw can only movein an oblique direction in the slideway 4, by reason of its groovesengaging the ribs in said guideway, the longitudinal movement of thescrew 11 produces an oblique movement of the shank of the movable jaw,and therefore a transverse movement of the lip and groove of said jawrelative to the groove and lip of the screw.

The walls of the fixed jaw, on each side of the slideway through whichthe movable jaw travels, are formed with beveled edges 20 engaged by theterminal portions 21 of the face of the movable jaw in contact with thefixed jaw, which terminal portions 21 are also beveled or undercut, sothat, on pressing said movable jaw inward toward the stem of the wrench,said undercut or beveled portions 21 of its face tend to draw said wallstogether instead of spreading them.

An important advantage of this invention is the cheapness ofconstruction, owing to the fewness of the parts and the simplicity ofthe arrangement.

a grooved circular inner end adapted to overhang and interlock wlth theflange of I claim v a A Wrench comprising a handle, a station- I aryjaw, a slidable jaw having an obliquely disposed inner end Wall providedwith a groove having one of its walls providing a the slidable aWforming the sole means for preventing the screw from turning and anoperating nn't on the screw.

In testimony whereof I have hereunto set 15 my hand in the presence oftwo subscribing flange, said flange extending throughout the Witnesses.

full transverse extent of t- 1e inner end Wall and of less height thanthe width of the JOHN ANDERSON- inner end Wall, a screw in the handlehaving WVitnesses:

FRANCIS M. WRIGHT, D B. RICHARDS.

e-op'i-es of this patent may be oio'tained "for five bents each, byaiiare'ss'ing the commissioner of Patents,

Washington, 1'). G.

